Finding the Fourth Proportional to 16,601.36, 22,908.76 and 9,432.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,601.36 : 22,908.76 = 9,432.78 : x
2. Step 2: Convert to fraction form
   16,601.36/22,908.76 = 9,432.78/x
3. Step 3: Cross multiply
   16,601.36x = 22,908.76 × 9,432.78
4. Step 4: Simplify right side
   16,601.36x = 216,093,384.53
5. Step 5: Solve for x
   x = 216,093,384.53/16,601.36
6. Step 6: Final answer
   x = 13,016.61